Mechanism for opening and closing sliding windows.



G. B. MUNCH. MECHANISM FOR OPENING AND CLOSING SLIDING WINDOWS.

APPLICATION FILED AUG.8. I9I3.

v 1 13?,UYfi, Patented Apr. 27, 1915.

WITNESSES INVENTO R W GOTTFRIED BERNHARD MUNICH ATTORN EV THE NORRIS PETERS 60., FHOTO-LITHQ. WASHINGTON. n. C,

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GOTTFRIED BEBNI-IARD M'il'NCH, 0F LEIPZIG, GERMANY, ASSIGNOR TO ALLVOR- APPARTE-GESELLSCHAFT MIT BESCI-IRANKTER HAFIUNG, 0F WUBJZEN, GER- MANY.

MECHANISM FOR OPENING AND CLOSING SLIDING WINDOWS.

Specification of Letters Patent.

Patented Apr. 27, 1915.

Application filed August 8, 1913. Serial No. 783,716.

To all whom it may concern Be it known that I, GOTTFRIED BERNHARD MiiNoI-r, a citizen of the German Empire, residing at Leipzig, in Germany, have invented certain new and useful Improvements in Mechanism for Opening and Closing Sliding Windows, of which the following is a specification.

The object of this invention is to efiect certain improvements in mechanism for opening and closing sliding windows and retaining same in selected positions intermediate of the fully closed and fully open positions.

The improved mechanism may be applied to the windows of railway carriages and other vehicles, but the invention is not restricted to carriage windows.

The invention is illustrated in the accompanying drawings, in which,

Figures 1 and 2 show an embodiment of the same, Fig. 1 being a vertical cross section, and Fig. 2 a front elevation, partly in section.

In the construction shown the rotatable handle for raising and lowering the window comprises a part a fixed across a cup-shaped member a the latter being fixed to a spindle 6 connected to suitable gearing G'for moving the window. The spindle b has bearing in a housing m which partly incloses the cup a A cover i is pivoted at t to the housing and normally lies in front of same, covering the handle. The cover W has atooth to, and the cup a has at its rim a ring of teeth 14 with which the tooth u can be engaged, with the handle in any angular position, to lock the handle and prevent movement of the window.

Formed on the cover, near the pivot t is a cam t and the flange of the housing m has a hole near this cam, in which there is an axially slidable rod 9. This rod abuts against a double-armed lever 29* which is pivoted at p and carries at its upper end a cross-bar 39 A spring 39 acting on the lever 20" normally thrusts the bar 79 against the window, and thus prevents rattling of the lattter. The spring also thrusts the lower arm of the lever against the rod 9 whereby the latter is pressed against the cam 6 By raising the cover r the tooth to is disengaged from the ring of teeth a on the member a so that the handle can be turned, for raising or lowering the window. The raising of the cover r also causes the cam t to push the rod q and rock the lever 39 so that the bar p is removed from contact with the window. When the window has been moved to the desired position, the cover is lowered again, and locks the handle, with the gear connected thereto, and the cam 25 allows the spring 79 to thrust the bar 70 against the window again. 7

It will be noted that while the handle is unlocked that circumstance is rendered conspicuous by the fact of the cover being raised, so that there is but slight risk of the handle being left unlocked through negligence.

What I claim as my invention and desire to secure by Letters Patent of the United States is In mechanism for raising and lowering a movable device from contact with the win-- dow.

In witness whereof I have signed this specification in the presence of two witnesses.

GOTTFRIED BERNHARD MUNCH.

Witnesses RICHARD GLAUs, RUDOLPH FRIOKE.

(Topics of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

